The asset Alpha 7 is located on a plain area, on-shore.
Oil was found in units B1, B2 and B3.
Oil productive reservoir layers mainly consist of organic limestones.
The production was launched in 2011,all planned wells were drilled by 2013. All injectors produced before switching to injection.
Hydraulic fracturing is recommended for this field. 38 wells have been drilled at the field so far, 17 of them with hydraulic fracturing.
In 2020, well No. 16 was abandoned for technical reasons. Due to high water cut well No. 21 was switched to another horizon.
Reservoir pressure in reservoirs B1 and B3 is quite low and keeps declining. B2 is a bottom water-drive reservoir, but still requires pressure maintenance.

The asset Alpha 6 is located on a plain area, on-shore.
Oil was found in units B1, B2 and B3.
Oil productive reservoir layers mainly consist of organic limestones.
The production was launched in 2015, 16 wells have been drilled so far.
Reservoir pressure in some areas is quite low and keeps declining.
In order to maintain reservoir pressure, 2 wells near OWC were switched to injection.
The field development plan is aimed at production enhancement.

The asset Alpha 5 is located on the even land.
Oil presence was found in the deposits comprising units: B1, B2 and B3.
Reservoir layers of the productive formation mainly consist of organic limestones.
The asset was brought into commercial production in 1999.
Currently, 40 wells have been drilled at this field.
Given that the existing aquifer is not really active, it was decided to start a pressure maintenance system in 2000. Event thought the cumulative voidage replacement ratio is 120%, the reservoir pressure in some areas is still quite low and continues to decline. The redevelopment program of this asset aims to increase the current development parameters.

The asset Alpha 4 is located on the even land.
Oil presence was found in the deposits comprising units: B1, B2 and B3.
Reservoir layers of the productive formation mainly consist of organic limestones.
The asset was brought into commercial production in 1999.
The first producer that was put into operation was well E5, and it had a high watercut as a result of water breakthrough.
Therefore, to avoid such situation in future, the production levels of the remaining producers were limited. Currently, 39 wells have been drilled at this field.
The pressure at this field is poor, and is only maintained through the water-bearing edgewater, this is why in 1991 it was decided to start pressure maintenance. Event thought the cumulative voidage replacement ratio is 131%, the reservoir pressure in some areas is still quite low and continues to decline.
The redevelopment plan aims to restore 2 million m3 of oil over the next 5 years to achieve the originally planned indicators.

The Alpha 3 oil deposit is part of a giant oilfield located on the even land.
Oil presence was found in the deposits comprising units: A2, A3 and A4.
Reservoir layers of the productive formation mainly consist of organic limestones.
The asset was brought into commercial production in 1993.
The first producer that was put into operation was well E3, and it had a high watercut as a result of water breakthrough.
Therefore, to avoid such situation in future, the production levels of the remaining producers were limited.
Currently, 39 wells have been drilled at Alpha 3.
Aquifer was not active enough, this is why in 1996 it was decided to start pressure maintenance.
Event thought the cumulative voidage replacement ratio is 110%, the reservoir pressure in some areas is still quite low and continues to decline.
A field gathering system is present at the field. The current oil throughput available at the Alpha 3 is 600 m3/day, the liquid throughput is 800 m3/day. However, there is still a way to upgrade the field gathering system.
The pressure maintenance consists of the following elements: water intake, lift station and valve manifold. The water intake provides the lift station with 700 m3 of water per day, moreover the bottom water also feeds the lift station. A lift station has a pump with a maximum throughput of 1100 m3/day and a pressure of 100 bar. The pressure maintenance has the potential for improvement.